define([
  './createTaskProcessorWorker',
  './defaultValue-0a909f67',
  './WebMercatorProjection-13a90d41',
  './Matrix3-315394f6',
  './Math-2dbd6b93',
  './Check-666ab1a0'
], function (createTaskProcessorWorker, defaultValue, WebMercatorProjection, Matrix3, Math$1, Check) {
  'use strict'

  /* global require */

  let draco

  function bilinearInterpolate(tx, ty, h00, h10, h01, h11) {
    const a = h00 * (1 - tx) + h10 * tx
    const b = h01 * (1 - tx) + h11 * tx
    return a * (1 - ty) + b * ty
  }

  function sampleMap(u, v, width, data) {
    const address = u + v * width
    return data[address]
  }

  function sampleGeoid(sampleX, sampleY, geoidData) {
    const extent = geoidData.nativeExtent
    let x = ((sampleX - extent.west) / (extent.east - extent.west)) * (geoidData.width - 1)
    let y = ((sampleY - extent.south) / (extent.north - extent.south)) * (geoidData.height - 1)
    const xi = Math.floor(x)
    let yi = Math.floor(y)

    x -= xi
    y -= yi

    const xNext = xi < geoidData.width ? xi + 1 : xi
    let yNext = yi < geoidData.height ? yi + 1 : yi

    yi = geoidData.height - 1 - yi
    yNext = geoidData.height - 1 - yNext

    const h00 = sampleMap(xi, yi, geoidData.width, geoidData.buffer)
    const h10 = sampleMap(xNext, yi, geoidData.width, geoidData.buffer)
    const h01 = sampleMap(xi, yNext, geoidData.width, geoidData.buffer)
    const h11 = sampleMap(xNext, yNext, geoidData.width, geoidData.buffer)

    let finalHeight = bilinearInterpolate(x, y, h00, h10, h01, h11)
    finalHeight = finalHeight * geoidData.scale + geoidData.offset
    return finalHeight
  }

  function sampleGeoidFromList(lon, lat, geoidDataList) {
    for (let i = 0; i < geoidDataList.length; i++) {
      const localExtent = geoidDataList[i].nativeExtent

      let localPt = new Matrix3.Cartesian3()
      if (geoidDataList[i].projectionType === 'WebMercator') {
        const radii = geoidDataList[i].projection._ellipsoid._radii
        const webMercatorProj = new WebMercatorProjection.WebMercatorProjection(new Matrix3.Ellipsoid(radii.x, radii.y, radii.z))
        localPt = webMercatorProj.project(new Matrix3.Cartographic(lon, lat, 0))
      } else {
        localPt.x = lon
        localPt.y = lat
      }

      if (localPt.x > localExtent.west && localPt.x < localExtent.east && localPt.y > localExtent.south && localPt.y < localExtent.north) {
        return sampleGeoid(localPt.x, localPt.y, geoidDataList[i])
      }
    }

    return 0
  }

  function orthometricToEllipsoidal(vertexCount, position, scale_x, scale_y, center, geoidDataList, fast) {
    if (fast) {
      // Geometry is already relative to the tile origin which has already been shifted to account for geoid height
      // Nothing to do here
      return
    }

    // For more precision, sample the geoid height at each vertex and shift by the difference between that value and the height at the center of the tile
    const centerHeight = sampleGeoidFromList(center.longitude, center.latitude, geoidDataList)

    for (let i = 0; i < vertexCount; ++i) {
      const height = sampleGeoidFromList(
        center.longitude + Math$1.CesiumMath.toRadians(scale_x * position[i * 3]),
        center.latitude + Math$1.CesiumMath.toRadians(scale_y * position[i * 3 + 1]),
        geoidDataList
      )
      position[i * 3 + 2] += height - centerHeight
    }
  }

  function transformToLocal(
    vertexCount,
    positions,
    normals,
    cartographicCenter,
    cartesianCenter,
    parentRotation,
    ellipsoidRadiiSquare,
    scale_x,
    scale_y
  ) {
    if (vertexCount === 0 || !defaultValue.defined(positions) || positions.length === 0) {
      return
    }

    const ellipsoid = new Matrix3.Ellipsoid(Math.sqrt(ellipsoidRadiiSquare.x), Math.sqrt(ellipsoidRadiiSquare.y), Math.sqrt(ellipsoidRadiiSquare.z))
    for (let i = 0; i < vertexCount; ++i) {
      const indexOffset = i * 3
      const indexOffset1 = indexOffset + 1
      const indexOffset2 = indexOffset + 2

      const cartographic = new Matrix3.Cartographic()
      cartographic.longitude = cartographicCenter.longitude + Math$1.CesiumMath.toRadians(scale_x * positions[indexOffset])

      cartographic.latitude = cartographicCenter.latitude + Math$1.CesiumMath.toRadians(scale_y * positions[indexOffset1])
      cartographic.height = cartographicCenter.height + positions[indexOffset2]

      const position = {}
      ellipsoid.cartographicToCartesian(cartographic, position)

      position.x -= cartesianCenter.x
      position.y -= cartesianCenter.y
      position.z -= cartesianCenter.z

      const rotatedPosition = {}
      Matrix3.Matrix3.multiplyByVector(parentRotation, position, rotatedPosition)

      positions[indexOffset] = rotatedPosition.x
      positions[indexOffset1] = rotatedPosition.y
      positions[indexOffset2] = rotatedPosition.z

      if (defaultValue.defined(normals)) {
        const normal = new Matrix3.Cartesian3(normals[indexOffset], normals[indexOffset1], normals[indexOffset2])

        const rotatedNormal = {}
        Matrix3.Matrix3.multiplyByVector(parentRotation, normal, rotatedNormal)

        // TODO: check if normals are Z-UP or Y-UP and flip y and z
        normals[indexOffset] = rotatedNormal.x
        normals[indexOffset1] = rotatedNormal.y
        normals[indexOffset2] = rotatedNormal.z
      }
    }
  }

  function cropUVs(vertexCount, uv0s, uvRegions) {
    for (let vertexIndex = 0; vertexIndex < vertexCount; ++vertexIndex) {
      const minU = uvRegions[vertexIndex * 4] / 65535.0
      const minV = uvRegions[vertexIndex * 4 + 1] / 65535.0
      const scaleU = (uvRegions[vertexIndex * 4 + 2] - uvRegions[vertexIndex * 4]) / 65535.0
      const scaleV = (uvRegions[vertexIndex * 4 + 3] - uvRegions[vertexIndex * 4 + 1]) / 65535.0

      uv0s[vertexIndex * 2] *= scaleU
      uv0s[vertexIndex * 2] += minU

      uv0s[vertexIndex * 2 + 1] *= scaleV
      uv0s[vertexIndex * 2 + 1] += minV
    }
  }

  function generateGltfBuffer(vertexCount, indices, positions, normals, uv0s, colors) {
    if (vertexCount === 0 || !defaultValue.defined(positions) || positions.length === 0) {
      return {
        buffers: [],
        bufferViews: [],
        accessors: [],
        meshes: [],
        nodes: [],
        nodesInScene: []
      }
    }

    const buffers = []
    const bufferViews = []
    const accessors = []
    const meshes = []
    const nodes = []
    const nodesInScene = []

    // If we provide indices, then the vertex count is the length
    // of that array, otherwise we assume non-indexed triangle
    if (defaultValue.defined(indices)) {
      vertexCount = indices.length
    }

    // Allocate array
    const indexArray = new Uint32Array(vertexCount)

    if (defaultValue.defined(indices)) {
      // Set the indices
      for (let vertexIndex = 0; vertexIndex < vertexCount; ++vertexIndex) {
        indexArray[vertexIndex] = indices[vertexIndex]
      }
    } else {
      // Generate indices
      for (let newVertexIndex = 0; newVertexIndex < vertexCount; ++newVertexIndex) {
        indexArray[newVertexIndex] = newVertexIndex
      }
    }

    // Push to the buffers, bufferViews and accessors
    const indicesBlob = new Blob([indexArray], { type: 'application/binary' })
    const indicesURL = URL.createObjectURL(indicesBlob)

    const endIndex = vertexCount

    // POSITIONS
    const meshPositions = positions.subarray(0, endIndex * 3)
    const positionsBlob = new Blob([meshPositions], {
      type: 'application/binary'
    })
    const positionsURL = URL.createObjectURL(positionsBlob)

    let minX = Number.POSITIVE_INFINITY
    let maxX = Number.NEGATIVE_INFINITY
    let minY = Number.POSITIVE_INFINITY
    let maxY = Number.NEGATIVE_INFINITY
    let minZ = Number.POSITIVE_INFINITY
    let maxZ = Number.NEGATIVE_INFINITY

    for (let i = 0; i < meshPositions.length / 3; i++) {
      minX = Math.min(minX, meshPositions[i * 3 + 0])
      maxX = Math.max(maxX, meshPositions[i * 3 + 0])
      minY = Math.min(minY, meshPositions[i * 3 + 1])
      maxY = Math.max(maxY, meshPositions[i * 3 + 1])
      minZ = Math.min(minZ, meshPositions[i * 3 + 2])
      maxZ = Math.max(maxZ, meshPositions[i * 3 + 2])
    }

    // NORMALS
    const meshNormals = normals ? normals.subarray(0, endIndex * 3) : undefined
    let normalsURL
    if (defaultValue.defined(meshNormals)) {
      const normalsBlob = new Blob([meshNormals], {
        type: 'application/binary'
      })
      normalsURL = URL.createObjectURL(normalsBlob)
    }

    // UV0s
    const meshUv0s = uv0s ? uv0s.subarray(0, endIndex * 2) : undefined
    let uv0URL
    if (defaultValue.defined(meshUv0s)) {
      const uv0Blob = new Blob([meshUv0s], { type: 'application/binary' })
      uv0URL = URL.createObjectURL(uv0Blob)
    }

    // COLORS
    const meshColorsInBytes = defaultValue.defined(colors) ? colors.subarray(0, endIndex * 4) : undefined
    let colorsURL
    if (defaultValue.defined(meshColorsInBytes)) {
      const colorsBlob = new Blob([meshColorsInBytes], {
        type: 'application/binary'
      })
      colorsURL = URL.createObjectURL(colorsBlob)
    }

    const posIndex = 0
    let normalIndex = 0
    let uv0Index = 0
    let colorIndex = 0
    let indicesIndex = 0

    let currentIndex = posIndex

    const attributes = {}

    // POSITIONS
    attributes.POSITION = posIndex
    buffers.push({
      uri: positionsURL,
      byteLength: meshPositions.byteLength
    })
    bufferViews.push({
      buffer: posIndex,
      byteOffset: 0,
      byteLength: meshPositions.byteLength,
      target: 34962
    })
    accessors.push({
      bufferView: posIndex,
      byteOffset: 0,
      componentType: 5126,
      count: vertexCount,
      type: 'VEC3',
      max: [minX, minY, minZ],
      min: [maxX, maxY, maxZ]
    })

    // NORMALS
    if (defaultValue.defined(normalsURL)) {
      ++currentIndex
      normalIndex = currentIndex
      attributes.NORMAL = normalIndex
      buffers.push({
        uri: normalsURL,
        byteLength: meshNormals.byteLength
      })
      bufferViews.push({
        buffer: normalIndex,
        byteOffset: 0,
        byteLength: meshNormals.byteLength,
        target: 34962
      })
      accessors.push({
        bufferView: normalIndex,
        byteOffset: 0,
        componentType: 5126,
        count: vertexCount,
        type: 'VEC3'
      })
    }

    // UV0
    if (defaultValue.defined(uv0URL)) {
      ++currentIndex
      uv0Index = currentIndex
      attributes.TEXCOORD_0 = uv0Index
      buffers.push({
        uri: uv0URL,
        byteLength: meshUv0s.byteLength
      })
      bufferViews.push({
        buffer: uv0Index,
        byteOffset: 0,
        byteLength: meshUv0s.byteLength,
        target: 34962
      })
      accessors.push({
        bufferView: uv0Index,
        byteOffset: 0,
        componentType: 5126,
        count: vertexCount,
        type: 'VEC2'
      })
    }

    // COLORS
    if (defaultValue.defined(colorsURL)) {
      ++currentIndex
      colorIndex = currentIndex
      attributes.COLOR_0 = colorIndex
      buffers.push({
        uri: colorsURL,
        byteLength: meshColorsInBytes.byteLength
      })
      bufferViews.push({
        buffer: colorIndex,
        byteOffset: 0,
        byteLength: meshColorsInBytes.byteLength,
        target: 34962
      })
      accessors.push({
        bufferView: colorIndex,
        byteOffset: 0,
        componentType: 5121,
        normalized: true,
        count: vertexCount,
        type: 'VEC4'
      })
    }

    // INDICES
    ++currentIndex
    indicesIndex = currentIndex
    buffers.push({
      uri: indicesURL,
      byteLength: indexArray.byteLength
    })
    bufferViews.push({
      buffer: indicesIndex,
      byteOffset: 0,
      byteLength: indexArray.byteLength,
      target: 34963
    })
    accessors.push({
      bufferView: indicesIndex,
      byteOffset: 0,
      componentType: 5125,
      count: vertexCount,
      type: 'SCALAR'
    })

    // Create a new mesh for this page
    meshes.push({
      primitives: [
        {
          attributes: attributes,
          indices: indicesIndex,
          material: 0
        }
      ]
    })
    nodesInScene.push(0)
    nodes.push({ mesh: 0 })

    return {
      buffers: buffers,
      bufferViews: bufferViews,
      accessors: accessors,
      meshes: meshes,
      nodes: nodes,
      nodesInScene: nodesInScene
    }
  }

  function decode(data, schema, bufferInfo, featureData) {
    const magicNumber = new Uint8Array(data, 0, 5)
    if (
      magicNumber[0] === 'D'.charCodeAt() &&
      magicNumber[1] === 'R'.charCodeAt() &&
      magicNumber[2] === 'A'.charCodeAt() &&
      magicNumber[3] === 'C'.charCodeAt() &&
      magicNumber[4] === 'O'.charCodeAt()
    ) {
      return decodeDracoEncodedGeometry(data)
    }
    return decodeBinaryGeometry(data, schema, bufferInfo, featureData)
  }

  function decodeDracoEncodedGeometry(data) {
    // Create the Draco decoder.
    const dracoDecoderModule = draco
    const buffer = new dracoDecoderModule.DecoderBuffer()

    const byteArray = new Uint8Array(data)
    buffer.Init(byteArray, byteArray.length)

    // Create a buffer to hold the encoded data.
    const dracoDecoder = new dracoDecoderModule.Decoder()
    const geometryType = dracoDecoder.GetEncodedGeometryType(buffer)
    const metadataQuerier = new dracoDecoderModule.MetadataQuerier()

    // Decode the encoded geometry.
    // See: https://github.com/google/draco/blob/master/src/draco/javascript/emscripten/draco_web_decoder.idl
    let dracoGeometry
    let status
    if (geometryType === dracoDecoderModule.TRIANGULAR_MESH) {
      dracoGeometry = new dracoDecoderModule.Mesh()
      status = dracoDecoder.DecodeBufferToMesh(buffer, dracoGeometry)
    }

    const decodedGeometry = {
      vertexCount: [0],
      featureCount: 0
    }

    // if all is OK
    if (defaultValue.defined(status) && status.ok() && dracoGeometry.ptr !== 0) {
      const faceCount = dracoGeometry.num_faces()
      const attributesCount = dracoGeometry.num_attributes()
      const vertexCount = dracoGeometry.num_points()
      decodedGeometry.indices = new Uint32Array(faceCount * 3)
      const faces = decodedGeometry.indices

      decodedGeometry.vertexCount[0] = vertexCount
      decodedGeometry.scale_x = 1
      decodedGeometry.scale_y = 1

      // Decode faces
      // @TODO: Replace that code with GetTrianglesUInt32Array for better efficiency
      const face = new dracoDecoderModule.DracoInt32Array(3)
      for (let faceIndex = 0; faceIndex < faceCount; ++faceIndex) {
        dracoDecoder.GetFaceFromMesh(dracoGeometry, faceIndex, face)
        faces[faceIndex * 3] = face.GetValue(0)
        faces[faceIndex * 3 + 1] = face.GetValue(1)
        faces[faceIndex * 3 + 2] = face.GetValue(2)
      }

      dracoDecoderModule.destroy(face)

      for (let attrIndex = 0; attrIndex < attributesCount; ++attrIndex) {
        const dracoAttribute = dracoDecoder.GetAttribute(dracoGeometry, attrIndex)

        const attributeData = decodeDracoAttribute(dracoDecoderModule, dracoDecoder, dracoGeometry, dracoAttribute, vertexCount)

        // initial mapping
        const dracoAttributeType = dracoAttribute.attribute_type()
        let attributei3sName = 'unknown'

        if (dracoAttributeType === dracoDecoderModule.POSITION) {
          attributei3sName = 'positions'
        } else if (dracoAttributeType === dracoDecoderModule.NORMAL) {
          attributei3sName = 'normals'
        } else if (dracoAttributeType === dracoDecoderModule.COLOR) {
          attributei3sName = 'colors'
        } else if (dracoAttributeType === dracoDecoderModule.TEX_COORD) {
          attributei3sName = 'uv0s'
        }

        // get the metadata
        const metadata = dracoDecoder.GetAttributeMetadata(dracoGeometry, attrIndex)

        if (metadata.ptr !== 0) {
          const numEntries = metadataQuerier.NumEntries(metadata)
          for (let entry = 0; entry < numEntries; ++entry) {
            const entryName = metadataQuerier.GetEntryName(metadata, entry)
            if (entryName === 'i3s-scale_x') {
              decodedGeometry.scale_x = metadataQuerier.GetDoubleEntry(metadata, 'i3s-scale_x')
            } else if (entryName === 'i3s-scale_y') {
              decodedGeometry.scale_y = metadataQuerier.GetDoubleEntry(metadata, 'i3s-scale_y')
            } else if (entryName === 'i3s-attribute-type') {
              attributei3sName = metadataQuerier.GetStringEntry(metadata, 'i3s-attribute-type')
            }
          }
        }

        if (defaultValue.defined(decodedGeometry[attributei3sName])) {
          console.log('Attribute already exists', attributei3sName)
        }

        decodedGeometry[attributei3sName] = attributeData

        if (attributei3sName === 'feature-index') {
          decodedGeometry.featureCount++
        }
      }

      dracoDecoderModule.destroy(dracoGeometry)
    }

    dracoDecoderModule.destroy(metadataQuerier)
    dracoDecoderModule.destroy(dracoDecoder)

    return decodedGeometry
  }

  function decodeDracoAttribute(dracoDecoderModule, dracoDecoder, dracoGeometry, dracoAttribute, vertexCount) {
    const bufferSize = dracoAttribute.num_components() * vertexCount
    let dracoAttributeData

    const handlers = [
      function () {}, // DT_INVALID - 0
      function () {
        // DT_INT8 - 1
        dracoAttributeData = new dracoDecoderModule.DracoInt8Array(bufferSize)
        const success = dracoDecoder.GetAttributeInt8ForAllPoints(dracoGeometry, dracoAttribute, dracoAttributeData)

        if (!success) {
          console.error('Bad stream')
        }
        const attributeData = new Int8Array(bufferSize)
        for (let i = 0; i < bufferSize; ++i) {
          attributeData[i] = dracoAttributeData.GetValue(i)
        }
        return attributeData
      },
      function () {
        // DT_UINT8 - 2
        dracoAttributeData = new dracoDecoderModule.DracoInt8Array(bufferSize)
        const success = dracoDecoder.GetAttributeUInt8ForAllPoints(dracoGeometry, dracoAttribute, dracoAttributeData)

        if (!success) {
          console.error('Bad stream')
        }
        const attributeData = new Uint8Array(bufferSize)
        for (let i = 0; i < bufferSize; ++i) {
          attributeData[i] = dracoAttributeData.GetValue(i)
        }
        return attributeData
      },
      function () {
        // DT_INT16 - 3
        dracoAttributeData = new dracoDecoderModule.DracoInt16Array(bufferSize)
        const success = dracoDecoder.GetAttributeInt16ForAllPoints(dracoGeometry, dracoAttribute, dracoAttributeData)

        if (!success) {
          console.error('Bad stream')
        }
        const attributeData = new Int16Array(bufferSize)
        for (let i = 0; i < bufferSize; ++i) {
          attributeData[i] = dracoAttributeData.GetValue(i)
        }
        return attributeData
      },
      function () {
        // DT_UINT16 - 4
        dracoAttributeData = new dracoDecoderModule.DracoInt16Array(bufferSize)
        const success = dracoDecoder.GetAttributeUInt16ForAllPoints(dracoGeometry, dracoAttribute, dracoAttributeData)

        if (!success) {
          console.error('Bad stream')
        }
        const attributeData = new Uint16Array(bufferSize)
        for (let i = 0; i < bufferSize; ++i) {
          attributeData[i] = dracoAttributeData.GetValue(i)
        }
        return attributeData
      },
      function () {
        // DT_INT32 - 5
        dracoAttributeData = new dracoDecoderModule.DracoInt32Array(bufferSize)
        const success = dracoDecoder.GetAttributeInt32ForAllPoints(dracoGeometry, dracoAttribute, dracoAttributeData)

        if (!success) {
          console.error('Bad stream')
        }
        const attributeData = new Int32Array(bufferSize)
        for (let i = 0; i < bufferSize; ++i) {
          attributeData[i] = dracoAttributeData.GetValue(i)
        }
        return attributeData
      },
      function () {
        // DT_UINT32 - 6
        dracoAttributeData = new dracoDecoderModule.DracoInt32Array(bufferSize)
        const success = dracoDecoder.GetAttributeUInt32ForAllPoints(dracoGeometry, dracoAttribute, dracoAttributeData)

        if (!success) {
          console.error('Bad stream')
        }
        const attributeData = new Uint32Array(bufferSize)
        for (let i = 0; i < bufferSize; ++i) {
          attributeData[i] = dracoAttributeData.GetValue(i)
        }
        return attributeData
      },
      function () {
        // DT_INT64 - 7
      },
      function () {
        // DT_UINT64 - 8
      },
      function () {
        // DT_FLOAT32 - 9
        dracoAttributeData = new dracoDecoderModule.DracoFloat32Array(bufferSize)
        const success = dracoDecoder.GetAttributeFloatForAllPoints(dracoGeometry, dracoAttribute, dracoAttributeData)

        if (!success) {
          console.error('Bad stream')
        }
        const attributeData = new Float32Array(bufferSize)
        for (let i = 0; i < bufferSize; ++i) {
          attributeData[i] = dracoAttributeData.GetValue(i)
        }
        return attributeData
      },
      function () {
        // DT_FLOAT64 - 10
      },
      function () {
        // DT_FLOAT32 - 11
        dracoAttributeData = new dracoDecoderModule.DracoUInt8Array(bufferSize)
        const success = dracoDecoder.GetAttributeUInt8ForAllPoints(dracoGeometry, dracoAttribute, dracoAttributeData)

        if (!success) {
          console.error('Bad stream')
        }
        const attributeData = new Uint8Array(bufferSize)
        for (let i = 0; i < bufferSize; ++i) {
          attributeData[i] = dracoAttributeData.GetValue(i)
        }
        return attributeData
      }
    ]

    const attributeData = handlers[dracoAttribute.data_type()]()

    if (defaultValue.defined(dracoAttributeData)) {
      dracoDecoderModule.destroy(dracoAttributeData)
    }

    return attributeData
  }

  const binaryAttributeDecoders = {
    position: function (decodedGeometry, data, offset) {
      const count = decodedGeometry.vertexCount * 3
      decodedGeometry.positions = new Float32Array(data, offset, count)
      offset += count * 4
      return offset
    },
    normal: function (decodedGeometry, data, offset) {
      const count = decodedGeometry.vertexCount * 3
      decodedGeometry.normals = new Float32Array(data, offset, count)
      offset += count * 4
      return offset
    },
    uv0: function (decodedGeometry, data, offset) {
      const count = decodedGeometry.vertexCount * 2
      decodedGeometry.uv0s = new Float32Array(data, offset, count)
      offset += count * 4
      return offset
    },
    color: function (decodedGeometry, data, offset) {
      const count = decodedGeometry.vertexCount * 4
      decodedGeometry.colors = new Uint8Array(data, offset, count)
      offset += count
      return offset
    },
    featureId: function (decodedGeometry, data, offset) {
      // We don't need to use this for anything so just increment the offset
      const count = decodedGeometry.featureCount
      offset += count * 8
      return offset
    },
    id: function (decodedGeometry, data, offset) {
      // We don't need to use this for anything so just increment the offset
      const count = decodedGeometry.featureCount
      offset += count * 8
      return offset
    },
    faceRange: function (decodedGeometry, data, offset) {
      const count = decodedGeometry.featureCount * 2
      decodedGeometry.faceRange = new Uint32Array(data, offset, count)
      offset += count * 4
      return offset
    },
    uvRegion: function (decodedGeometry, data, offset) {
      const count = decodedGeometry.vertexCount * 4
      decodedGeometry['uv-region'] = new Uint16Array(data, offset, count)
      offset += count * 2
      return offset
    },
    region: function (decodedGeometry, data, offset) {
      const count = decodedGeometry.vertexCount * 4
      decodedGeometry['uv-region'] = new Uint16Array(data, offset, count)
      offset += count * 2
      return offset
    }
  }

  function decodeBinaryGeometry(data, schema, bufferInfo, featureData) {
    // From this spec:
    // https://github.com/Esri/i3s-spec/blob/master/docs/1.7/defaultGeometrySchema.cmn.md
    const decodedGeometry = {
      vertexCount: 0
    }

    const dataView = new DataView(data)

    try {
      let offset = 0
      decodedGeometry.vertexCount = dataView.getUint32(offset, 1)
      offset += 4

      decodedGeometry.featureCount = dataView.getUint32(offset, 1)
      offset += 4

      if (defaultValue.defined(bufferInfo)) {
        for (let attrIndex = 0; attrIndex < bufferInfo.attributes.length; attrIndex++) {
          if (defaultValue.defined(binaryAttributeDecoders[bufferInfo.attributes[attrIndex]])) {
            offset = binaryAttributeDecoders[bufferInfo.attributes[attrIndex]](decodedGeometry, data, offset)
          } else {
            console.error('Unknown decoder for', bufferInfo.attributes[attrIndex])
          }
        }
      } else {
        let ordering = schema.ordering
        let featureAttributeOrder = schema.featureAttributeOrder

        if (
          defaultValue.defined(featureData) &&
          defaultValue.defined(featureData.geometryData) &&
          defaultValue.defined(featureData.geometryData[0]) &&
          defaultValue.defined(featureData.geometryData[0].params)
        ) {
          ordering = Object.keys(featureData.geometryData[0].params.vertexAttributes)
          featureAttributeOrder = Object.keys(featureData.geometryData[0].params.featureAttributes)
        }

        // Use default geometry schema
        for (let i = 0; i < ordering.length; i++) {
          const decoder = binaryAttributeDecoders[ordering[i]]
          if (!defaultValue.defined(decoder)) {
            console.log(ordering[i])
          }
          offset = decoder(decodedGeometry, data, offset)
        }

        for (let j = 0; j < featureAttributeOrder.length; j++) {
          const curDecoder = binaryAttributeDecoders[featureAttributeOrder[j]]
          if (!defaultValue.defined(curDecoder)) {
            console.log(featureAttributeOrder[j])
          }
          offset = curDecoder(decodedGeometry, data, offset)
        }
      }
    } catch (e) {
      console.error(e)
    }

    decodedGeometry.scale_x = 1
    decodedGeometry.scale_y = 1

    return decodedGeometry
  }

  function decodeI3S(parameters) {
    // Decode the data into geometry
    const geometryData = decode(parameters.binaryData, parameters.schema, parameters.bufferInfo, parameters.featureData)

    // Adjust height from orthometric to ellipsoidal
    if (defaultValue.defined(parameters.geoidDataList) && parameters.geoidDataList.length > 0) {
      orthometricToEllipsoidal(
        geometryData.vertexCount,
        geometryData.positions,
        geometryData.scale_x,
        geometryData.scale_y,
        parameters.cartographicCenter,
        parameters.geoidDataList,
        false
      )
    }

    // Transform vertices to local
    transformToLocal(
      geometryData.vertexCount,
      geometryData.positions,
      geometryData.normals,
      parameters.cartographicCenter,
      parameters.cartesianCenter,
      parameters.parentRotation,
      parameters.ellipsoidRadiiSquare,
      geometryData.scale_x,
      geometryData.scale_y
    )

    // Adjust UVs if there is a UV region
    if (defaultValue.defined(geometryData.uv0s) && defaultValue.defined(geometryData['uv-region'])) {
      cropUVs(geometryData.vertexCount, geometryData.uv0s, geometryData['uv-region'])
    }

    // Create the final buffer
    const meshData = generateGltfBuffer(
      geometryData.vertexCount,
      geometryData.indices,
      geometryData.positions,
      geometryData.normals,
      geometryData.uv0s,
      geometryData.colors
    )

    const customAttributes = {}
    if (defaultValue.defined(geometryData['feature-index'])) {
      customAttributes.positions = geometryData.positions
      customAttributes.indices = geometryData.indices
      customAttributes.featureIndex = geometryData['feature-index']
      customAttributes.cartesianCenter = parameters.cartesianCenter
      customAttributes.parentRotation = parameters.parentRotation
    } else if (defaultValue.defined(geometryData['faceRange'])) {
      customAttributes.positions = geometryData.positions
      customAttributes.indices = geometryData.indices
      customAttributes.sourceURL = parameters.url
      customAttributes.cartesianCenter = parameters.cartesianCenter
      customAttributes.parentRotation = parameters.parentRotation

      // Build the feature index array from the faceRange.
      customAttributes.featureIndex = new Array(geometryData.positions.length)
      for (let range = 0; range < geometryData['faceRange'].length - 1; range += 2) {
        const curIndex = range / 2
        const rangeStart = geometryData['faceRange'][range]
        const rangeEnd = geometryData['faceRange'][range + 1]
        for (let i = rangeStart; i <= rangeEnd; i++) {
          customAttributes.featureIndex[i * 3] = curIndex
          customAttributes.featureIndex[i * 3 + 1] = curIndex
          customAttributes.featureIndex[i * 3 + 2] = curIndex
        }
      }
    }

    meshData._customAttributes = customAttributes

    const results = {
      meshData: meshData
    }

    return results
  }

  function initWorker(dracoModule) {
    draco = dracoModule
    self.onmessage = createTaskProcessorWorker(decodeI3S)
    self.postMessage(true)
  }

  function decodeI3SStart(event) {
    const data = event.data

    // Expect the first message to be to load a web assembly module
    const wasmConfig = data.webAssemblyConfig
    if (defaultValue.defined(wasmConfig)) {
      // Require and compile WebAssembly module, or use fallback if not supported
      return require([wasmConfig.modulePath], function (dracoModule) {
        if (defaultValue.defined(wasmConfig.wasmBinaryFile)) {
          if (!defaultValue.defined(dracoModule)) {
            dracoModule = self.DracoDecoderModule
          }

          dracoModule(wasmConfig).then(function (compiledModule) {
            initWorker(compiledModule)
          })
        } else {
          initWorker(dracoModule())
        }
      })
    }
  }

  return decodeI3SStart
})
